Spring catch



y 1930. .c. A. FRIEDLANDER 1,759,550

SPRING CATCH Filed June 4, 1928 [nvevfo Patented May 20, 1930 UNITEDSTATES,

, (morn ASSIUR 'FRIEDLANDER, or LONDON, ENGLAND, ASSIGNOR 'ro cEcILASSUR w a nywonrna' COMPANY, or LONDON, ENGLAND 7 SPRING CATCH l "Alication filed J'une 4, 1928, serial No. 282,773, andj n GreatBritaimJluly 12, 1927.

I This' invention relates to improvements in spring catches of thespring tongue and socket type especially suitable for fasteningnecklaces, bracelets and known'generally as a snap 5 fastening. 1 3 I Inthe use of snap fasteningsof this type it has hitherto been foundnecessary to provide a safety chain or'catch in; case the spring tongueshould fail. This has involved two 1 distinct actions upon the part ofthe wearer for user, that in connection with the safety chain or catchalways havingbee'n' of a finicky or troublesome nature and which it isthe object of this inventionto overcome, by dispensing entirely with thenecessity of it;

According to' this invention, the fastening comprises a plurality ofspring I tongue-andsocket elements, each of which elements is separatelyformed and has an inde endent action, the springtongue thereof, eing'constructed to act upon the opposite walls of its,

socket so that in the event locking action of one element should fail,the operation of the remaining element or elements is unaffected so thatthe same will remain in locked position. Accordingly, in such aconstruction, each element acts as a separate fastening to avoid thenecessityof providing a safety chain or the like. 80 Preferably the twoparts of the fastening are each formed with a spring tongue and asocket, the spring tongue and the socket on one part being adapted whenin the closed position to mate with the corresponding socket and springtongue on the other part.

The invention is illustrated in the accompanying drawings in whichFigure 1 is a plan of a snap fastening (in the locked position)constructed in accordance with the preferred form of the'in'vention andfor use with a necklace. Figures 2 and 3 are similar views show ing thetwo parts of the fastening in the unlocked position, Figure 3 beingpartly broken away to disclose the construction.

Figures 4 and 5 are respectively a side and end elevation of the partshown in Figure 3. Figure 6 is an inverted plan view of the inventionwith the parts in the position shown in Figure 1, and Fi ure 7 is asectional view taken on the line 7 of Figure 6. The drawsunningsuchtongue and arm to be inserted 'lnto'the compa'mon member 1 throughopen-' gest settings for precious stones.v

show the fastening to a greatly enlarged scale. 1 I I {In the drawings,mating sections A and B constitute the fastening or spring catch and areshownseparated'in Figures 3 and4 and as fastened together in'Fi'gures 1and 6. I Each section has an elongated tubular member or socket 1provided with an open end 2 in which a projection or shoulder 7 isformed. From the other or closed end of each tubular 6;)

member '1, extends an open plate or head?) which vcarries a tongue 4arranged parallel to I the tubular portion and adapted to be inserted'into the companion tubular portion; Each tongue 4: has a lockingmemberor arm 5 which is inclined upwardly and outwardly as specificallyappears inFigures l and 5 and at its upper or free end, hasamanipulating head athereon whereby it'may be, depressed. Each arm 5 isresilient and in its upper surface has a hotch-Badaptedfo-rlockingenga'gement with projection I I I The normal position oftongue 4 and arm;5 I of'eachsecti'on is shown in Figure 4., Preing 2, itwillbe realized that the upper surface' of arm 5 because it is inclined,will engageand bedepressed by projection 7 and the v notch 6 will clipinto locking engagement with said projection 7 When it is desired todetach thesections, the portions 0 are depressed, thus springing thearms 5 nearerthe planes of the tongues 4 and causing notches 6 todisengage the projections 7 whereupon I,

i The different parts'may be suitably ornamented andIparticularly thetubular-members 1 and heads a asf'show'n, The circles C sugthe'sectionsA and B may he readil ul l g'd Stops 8 are formed on the stems 4tolimit I the'closing movement of the fastening by en gaging with theends of the tubular members or sockets. 9 indicate ring holesforattachment to the ends of the necklace and in I a one with theheads-3. The two parts ofthe i fastening illustrated it will be observedare identical with one another but of course such would notnecessarily'be the case if each were 0 ton I of the other tongue.

i formed with more than one spring tongue and socket element. 7

It is clear that anydesired number of spring 7 tongues and sockets maybe'formed on each part and that'they maybe arranged in any 0 desiredmanner-provlded the spring tongues on each part have their correspondingsockets on the other part of the fastening. Alter-- natively thespring'tonguesv may all be formed j on -the onepart andthe sockets-onthe other part, I a r What I claim is lfiA catch of the'cla'ss describedcompris- V 7 ingtwo separable elements, each element u formed-withasocket-and tongue, the tongue of each element interlocking with thecorre- "sponding socket of the other element, the end of the tongue ofone-element when in locked position, being so spaced from the end'of thetongue of the ther element that the interlocking action of each 1 tonguewith the corre- 2 A catch of the class described, coinp'risspondingsocket is independentof th'e'other ing two separable elements,each element formed withfla socketa'nd tongue,each tongue having aresilient locking 'ortion, the'ton'gue and locking portion of each vwiththe corresponding socket of the other element, the end of the tongue ofone element when in lockedjposition' being so spaced from elementengaging the .end ofthe tongue of the other element that theinterlocking action of each tongue with the correspondingsocket isindependent A catchof the class described comprising 7 two separableelements,'each element formed tongues, each socket portion having apro-"f 'jection adaptedtoe'ngage the inclined por-- tion adjacentthereto and snap into the adjacent notch, said tongues and'socket mems vbers being oifsetso that each tongue aligns with a socket member,andfeach tongue having a stop to engage the adjacentfsocket to limit thefastening movement of'the elements.

' 6. A two-part spring catch, each part com:

adapted when the catchis'closed,tomatewith c the corresponding socketand spring tongue on the other part.' i

v 7. A catch of the class described'cornp'ris-g ing two separableelements, each element having a socket and a tongue, the tongue-of eachelement-interlocking with the corresponding socket of the otherfelement,said tongues 'be-g ing disposed for application to their'fsockets bymovement in substantially parallel, and H non-intersecting'paths'wherebythey will not contactwitheach other s'othat theiinterlock- 1 7 ingaction ofeach tongue with. its correspondg ing socket Will beind'epedent of the other 7 tongue and socket.

In testimony that I claim the foregoing, as

my invention 1 have Signed. y name this third da ofMay,192 8. Y r c c con ILIASSUR FRIEDLANDEn;

With a tongue-rand socket,each tongue having V a" resilient lcckinportion, the tongue and locking fortion or each element engaging by'snapaction' WiththecOrreSPonding socket of V l1 the other element,theend of the tongue of one element when in lockedposition being so cspaced from the end of the tongue of the other elementthat theinterlocking action of f e each tongue With'the corresponding socket isI independent of theother tongue.

4. A catch of the class described comprising a e} plurality of elements,each element having a tongue provided with .a resilient ortion having .anotch having'walls dispose trans- 1 versely of the tongue, said portionbeing inclined normally and when in looking position,

' each e'lement having 'a socket portion 1 adapted to ;be r.entered andoccupied bythe tongues indiv1du'a]ly-,-, eachv socket portion having aprojection adapted to engage the V inclined portion adjacent thereto andsnap lntothe ad acent notch betweenthe said walls thereof o I i catchcofthe class described, comprisa pluralityof elements, each element havingaton ue provided withfa resilient inclined POrtlQI} avings; notch, eachelement having a sqcket portion adeptedto be entered by the

